10. Trachydosaurus rugosus.

Rugose Stump-tail.

A large, lazy, and very common kind of Lizard, generally known as the "Sleeping Lizard," which frequents open sandy plains, and may be captured in large numbers during a hot summer's day.

The number of young produced, seldom exceeds 4, those dissected by me had 2 embryos only. I believe these Lizards do not inhabit the east coast, at all events they are not found near Sydney, or at the Hastings or Clarence Rivers.

In Western Australia, particularly in the neighbourhood of King George's Sound they are very common.